Miter-machine.



C. S. LAIVIPHERE.

IVIITER MACHINE.

APPLICATION FILED IUNE 23.19II.

Patented .IuIy 23, 1918.

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Patented July 23, 1918.

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MITER MACHINE.

APPLICATloN FILED JUNE 23.1917.

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ann Femmine coiuranr, or emanen,

ILLInos, `a` connonaiuoner remmers,

nirwana-Mummia hausses,

specification of Letters .Patent Pajtejm'ltneqdl Jl'pilly appneatioa ined annees, lair. .seria1no-f1rcae5.

2lb all whom z'fmay. concern. f

Be it known that l, CHAnLns S. LAM# rijmen, a citizen ofjthe y.United States, and a resident of Chicago, in thecounty of Gool; and State of Illinois, have invented .certain new and useful. lmprovernents .in Miter- Machines, `of which the following is a specilication. y

My invention relates ,to an improyed mitering machine particularly `adaptable for mitering the ends of" border printing plates or slugs used in the printing art.

In the `printing art vadvertisements `in newspapers, magazines, .or other publications, particularly individual advertisements, are-.usually surrounded ,by` a border for the printing of which `type plates 4are used, and these plateshave beveled ends so as to accurately fit together. lleretofore mitering of the plate ends was accomplished in a more or less impractical and uneeonomical manner, `usually by manually operated cutting machines Vin which l,a knife is `operated to trim ,off `and `miter lthe plates,.the type-setter mitering the plates aslie ,needed them. These hand operated machines required considerable guess worl .to cut oft just enough to get lthe right length of plate and necessarily there was considerable waste of time and labor.

The object of my invention is `therefore to provide a `power driven machine which can be accurately set `for any desired length of plate and which will quickly,accuratelyv and efficiently miter the platefends with absolute `safety to the operator. 1n my ini-,l proved machine a motor `,driven cutter. is

used having its cutting teeth `edges .t mi

angle of 45 degrees, andyanadjustable stop is provided `against which the plates are abutted at one end to loe carried with `their other end past `and in engagement with the cutter wheel to be mitered. At the corner dimensions of the'plates, that is,ithe distance between the outer corners of the mitered plates, means are provided fori adjusting the distance between the cutter -Wheel and the abutment for plates of diderent thickness, and one of the important features of my invention is to provide an adjustable abutment head having aseries of abutment steps for ,receiving .Plates of CelfrsPQDdlils' thickness, or, inthe words of the printing art, diiierentfpoint plates.. Y l

@nfthe accompanying drawings aimachine is shown "which embodies the' above and drawings- `Figure 1 is a `plan view.

`f2 isayiew from plane `2.-;2, Fig. 1, Fig. 3 `is an enlarged sectional view on plane-343Fig. 1, l i

lifig. d` is anenlarged sectional view `on plane 1-4, Fig. 1, and 5 shows a uniteredplate.

it hollow rectangular,standard `5 rises from a base-36 and supports atop 'ton whichl thevarious operating parts are mounted. jjj-'l shelf or bracket f8 `extends laterallyfroin other` features of `the invention, and. on .these ,the standard and Support/.S a driving :motor M `whose shaft extends throughand is journaledinthe `wall 9 ofthe `standard and has secured toits inner end the cutter 1Q, the cutting, edges of whose teeth are atan langle of 45 degrees. ln the `top 17 isthe opening` 11 through which the cutter `teeth extend.

`ln the top 7 theguide groove `12` extends from front to rear at .right angles with `the motor shaft slidable `in this groove is thedovetailed `plate 13 fer supporting the adjustable abutment mechanism. it flange .14 is securedto the plate by screws wand supports a longitudinally extending guide rail d6 having `the guide groove 17 inits front side for receivingjthe rearwardlyextending tongue `18 onthe vertical member `19 ofthe horizontal carrier plate 2O` which is secured by screws "2,1 `tothe `block 22 engaging with the top surface ofthe table 'fand with the rear surface of `the rail 16. "En tending forwardly from the rear1 at Ythe raily 16 .thereof isthe inner iixedbearing lug 23 and theouter adjustable bearing` "lug2`4, `a graduated adjustinglrod 25 beingfjournaled in these lugs. Detachably `secured to the top of carrier plate 20 at rightangles with the rail 16 is the frame26 whichfhas the transverse `passageway 27 therethrough for receiving thegraduated rod25. ln the rear end of this frame 26 is the pocket 28 lor the abutment 29 between whose inner end andthe base of the pocket is-` the compression springBO which tends .to move the "abutment rearwargdly.` A ,detent ringer 51, issecured at its rear end to the abutment and extends forwardly through the slot 32 with its end 33 deliecting downwardly to enga-ge in the A, graduation notches 34 eut in the rod 25. By

f acute'edges of the mitered ends, and for plates of different thickness but 0f the same length adjustment must be made on the machine. For example, in the case of 'twoinch lengths the abutment carrier must be shifted toward the cutter for thicker plates.

The plates are usually of standard graduation as to thickness on the basis of approximately 72 points to the inch, plates being referred to as 6 point, 8 point, or 12 point, etc., as to thicknessand also as to length. On'` my improved machine the carrier 2O is adjusted for a certain vplate length, and an adjustable abutment head 36 is provided for adjustment for plate thickness. The head 36 is cylindrical'and ab'uts against the inner faceof the rblock 22 and is securedr to the outer end ofa shaft 37 journaled in the block, theshaftat its other end having the knilrl'edk dish 3S by which it can readily be turned. Theouter end of .the head 36 is ntched adjacent its periphery to provide a series of abutment steps 39 and 40 set axially inwardly from the front face of the head, which face also Vforms an abutment. Any number of suchabutment steps may be provided'. On the drawing the surface 36Y of the head is adjacent the top of table 7 and the'plate to be mitered is laid flat on the @table with ,its inner end against the back of therail 16, and then the carrier is shifted with theplate 13V which engages Vin the groove 12," and the inner end of the plate is carried lpast and in engagement with the cutter teeth and is mitered. Any number ofplates can firstjbe mitered at one end and then the plates are laid with their mitered ends against the Yabutment head and fed through the machine to have their other ends mitered. If it i's-desired to cut'mitered plates" of the saine Ylength butof greater thickness,the abutment head 36 is retated by `means of the dish 3S to bring the corresponding abutment, stepfadjacent the table top v`and the plates are then abutted against the step andfed through the machine. Thus o'nly one setting ofthe carrieris necessary for one llength of: plate andthe 'proper abutment'fo'r, difterentthielinesses of plate can be readily established by adjustment of the head 36. To lock the head 3G in adjusted position I preferably provide a dctent pin 41 pressed outwardly by the spring 42 with it-s end in one of the detent depressions 43 in the rear side of the head 36.

lOwing to wear or lost motion, the graduation notches 34 in the rod 25 may not be in full accord with the distances between the vcutter plane andthe abutment plane after settingof the carrier 20. The rod 25 is therefore adjustable longitudinally. The lug 24 is shiftable longitudinally on the rail 16 to the extent of the length of the slot 441: through which the set screw 45 passes and threads into the lug 24. By shifting of the lug 24, rough adjustment can first be made and then inal micrometer adjustment of the rod 25 can be made by turning the nut 46 which engages the outer threaded end of the rod 25 where itpasses through the lug 24.

The table top 7 is preferably hinged to the back of the standard 5 as indicated at 47 in' order that it may be raised to permit access to the cutter, and a stop 4S is preferably providcd at the side of the table to be engaged by the pin 49 extending from the carrier in order to limit the rearward travel of the carrier.

Provision is also made to protect the operator from the cutter teeth. A guard frame 5() is therefore mounted on the table over the opening 11 through which the cutter projects. Hinged at its front end to the inner side of this frame is a plate 51 whose vertical swing is controlled by thc slot 52 inthe plate and the screw 53 secured to the frame. A leaf spring 54 secured at one end to the guard frame extends at its other end into the slot 55 in the plate 51 and tends to hold this plate down against the top of the table 7 and in the path of printing plates to be mitered. The plate 51 therefore serves to hold the plates aga-inst thc table during the mitering operation, and also serres to prevent the operator-s fingers from slipping into the guard frame into contact with the cutter teeth. j Y

I thus provide a very simple, economical and eiiicient machine on which printing PlltGS. C5111 b@ qUCklY and accurately mitered. Accurate adjustment can be made for length and also for. thickness.

I do not of course desire to be limited to the precise construction, arrangement and operation shown and described as modifications are no` doubt possible which would still come withinthe scope of the appended claims.

I claim as follows:

1. Ina miteringmachine, the combination of a supporting structure. a mitcring cutter mounted on said structure for rotation, a carrier structure for shifting plates to be initered through the field of said cutter, and an adjustable abutment head on said carrier structure `having a plurality of abutment steps for.receivingthenplates to be` mitered.

2. In a miterin g machine, the combination of a supporting structure, arotatable cutter mounted thereon, a` carrier structure der aliiuing and `shifting platesto be `mitercd through the field of said cutter, and au abutment` head .having a plurality of abutment steps, said head being rotatably adjustable to bringany one oli-the steps 'into position to receive plates to be miterec.

3. ln a mitering machine, the combination of a supporting table, a rotary cutter mounted below the table with its cutting teeth projecting therethrough, said table having a guide groove parallel with said cutter, a supporting plate slidable in said groove, an abutment structure secured to said plate to travel therewith and to receive plates to be shifted through the iield of said cutter, and an adjustable head on said abutment structure yhaving a plurality of abutment steps for receiving plates of dili'erent thickness.

4. In a mitering machine, the combination of a supporting table, a rotary cutter mounted below the table with its cutting teeth projecting therethrough, said table having a guide groove parallel with said cutter, a supporting Vplate slidable in said groove, an abutment structure secured to said plate to travel therewith and to receive plates to be shifted through the lield of said cutter, an abutment head on said abutment structure having' a plurality of steps of different depth or receiving plates of different thickness, said head being rotatable to bring any one of said steps in position to receive plates.` j

ln a mitering machine, the combination of a supporting table, a rotary cutter mounted thereon, said table having a guide groove in its upper side parallel with said cutter, a supporting plate shiftable in said groove, a rail member secured to said plate parallel with the cutter axis, a carrier slidable on said rail toward 'and away from said cutter, and au adj ustable cutter head on said carrier having a plurality ci' abutment steps for plates of different thickness.

G. ln a mitcring machine, the combination ot a supporting table, a rotary cutter mounted thereon, said table having a guide groove in its upper side parallel with said cutter, a supporting plate shiftable in said groove, a rail member secured to said plate parallel with said cutter axis, a carrier slidable on said rail toward and from said cutter, a graduated rod secured to said rail, a frame extending from said carrier and receiving said rod, means for detachably clamping said frame to said rod to adjust for the length of plate to be mitered, and a rotary abutment head on said carrier having a series of abutment steps of diierent depth for plates oi' different thickness.

7.. In a mitering machine, the combination Largest ofia supportingitablc, :a rotaryfcutter .mount-f eden and projecting above the top `surface of said table, said table `having a `guide groove in its upper side parallelwith the cutter, a supportingA iplate shiftable in saidgroove, a railxmember securedito said plate parallel with the outterwanis, a `carriermounted `on and shiftable on Vsaid rail `member tow-ard and away from said cutter, a rod secured to said rail .member and graduated `in i accordance with the distance between said carrier and said cutter, a frame extending from said carrier and receiving said rod, said rod being notched, a detent linger within said frame, an abutment secured to the rear end of said detent finger, a spring within the frame tending to force said abutment rearwardly to hold the front end of said linger in the notches of said rod whereby to lock the carrier with reference to the cutter, pressure on said abutment causing release of said abutment from said rod to permit shifting of said carrier, and means for positively locking said frame and thereby said carrier to said rod.

8. In a mitering machine, the combination of a supporting table, a rotary cutter mounted on and projecting above the top surface of said table, said table having a guide groove in its upper side parallel with the cutter, a supporting plate shiftable in said groove, a rail member secured to said plate parallel with the cutter aXis, a carrier mounted on and shiftable on said rail member toward and away from said cutter, a rod secured to said rail member and graduated in accordance with the distance between said carrier and said cutter, a frame extending from said carrier and receiving said rod, said rod being notched, a detent finger within said frame, an abutment secured to the rear end of said detent linger, a spring within the frame tending to force said abutment rearwardly te hold the front end of said linger in the notches of said rod whereby to lock the carrier with reference to the cutter, pressure on said abutment causing release of said abutment from said rod to permit shifting of Said carrier, and a rotatable head mounted on said carrier having a plurality ci abutment steps for receiving the ends of plates of diiierent thickness.

9. In a mitering machine7 the combination of a supporting table, a rotary cutter mounted on and projecting above the top surface oi said table, said table having a guide groove in its upper side parallel with the cutter, a supporting plate shiftable in said groove, a rail member secured to said plate parallel with the cutter axis, a carrier mounted on and shiftable on said rail member toward and away from said cutter, a rod secured to said rail member and graduated in accordance with the distance between said carrier` and said cutter, a frame extending from said carrier and receiving said rodsed rod besure on said abutment causing release of .ing notched,V :L detent nger Within said said abutment from said rod to permit shft- 10 frame, an abutment secured. to the rear end ing of said carrier, said rod being longitudiof said detent nger, a spring Within the nelly adjustable. 5 freine tending to force said abutment rear- In witness whereof, I hereunto subscribe Wardly to hold. the front end of seid finger my name this 18th day of June, A. D., 1917. n the notches of said rod whereby to lock the carrier With reference to the cutter,-pres CHARLES S. LAMPHERE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

, Washington, D. C. 

